Facebook said that according to their idea, 870 million people were with the London-based political consultancy firm Cambridge Analyk.
The BBC has informed that about 1.1 million of them are based in the UK.
Criticism of this scandal was cited by Christopher Waili, who had earlier said that about 50 million people were affected.
After the publication of Facebook's Chief Technology Officer Mike Schrofer, the new information comes out.
This information leak was possible through a quiz app called 'This Is Your Digital Life'. Facebook has estimated that more than 300,000 people have used this app. Earlier this number was 2,70,000.
Approximately 97% of app users live in the United States Out of the total damaged people, 1 million and 60 million out of the US
A spokesman for the United Kingdom Information Commission told the BBC they will further investigate the information-proofs of this matter before taking any action.
Facebook has come under severe criticism after the scandal has been published. Authorities knew that Cambridge Analytics is working with millions of Facebook users' personal information. But London-based company claims that they have deleted those data. Trust this statement on Facebook
Channel Four News reported that there are some leaked information available yet. Even though Cambridge Analytics says they have spoiled the information they have.
Facebook's founder Mark Zuckerberg will put his own logic in the House of Commons on April 11th.
When the news of the use of their information for commercial and political purposes without the knowledge of the subscriber, Facebook chief Mark Zuckerberg was summoned to the British Parliament.
Mr. acknowledged that he had made mistakes. Commenting on Zakraberg's and customers' access to third-party information, he said on Facebook that he was "betrayed with clients".
Facebook steps
Mark Zuckerberg said Facebook authorities are going to bring a lot of changes in the coming days, so that different apps can not easily capture the information of customers by using Facebook in the future.
Facebook's top technology officer Schoffer explained in detail the steps taken by Facebook.